#include <stdio.h>

int main()
{
    int a,b,num1,num2,temp;
    printf("please input two number:\n");
    scanf("%d,%d",&num1,&num2);
    if(num1 < num2)
    {
        temp = num1;
        num1 = num2;
        num2 = temp;
    }
    a = num1;
    b = num2;
    while(b != 0)
    {
        temp = a % b;
        a = b;
        b = temp;
    }
    printf("公约数:%d\n",a);
    printf("公倍数:%d\n",num1*num2/a);
}